Clear Channel Gives Arbitron
Some Static on Radio Ratings

Arbitron Inc., which has held a lock on radio-audience measurement for years, is looking a little less invincible.

Radio executives have long grumbled about Arbitron, but a lack of alternatives forced them to subscribe to the New York company's services so they could convince advertisers to buy time on their stations. Now, frustrated by Arbitron's lack of progress in moving beyond its antiquated diary-based system for measuring listeners, the nation's largest broadcaster is examining its options. Earlier this week, Clear...